HP Serviceguard Extended Distance Cluster for Linux A.01.00 Release Notes, Second Edition, May 2008

HP Serviceguard Extended Distance Cluster for Linux Release Notes
Compatibility Information and Installation Requirements
Chapter 112
configuration, if a packages fails on a node in one site, it is targeted to
startup on a node in a different site. Figure 1-1 and Table 1-2 elaborate
this configuration order.
Figure 1-1 4-node Datacenter Setup
In this figure, nodes N1 and N2 are in Datacenter 1 at Site 1, while N3
and N4 are in Datacenter 2 in Site 2. In the package configuration file,
you need to specify the failover sequence such that N1 of Site 1 is
followed by a node in Site 2. In this figure, you need to specify that N1 is
followed by N3. Similarly, specify that N2 of Site 1 is followed by N4.
Table 1-2 describes the failover sequence that you need to specify to
ensure that there is not data loss when there is a site failure.
Table 1-2 Failover Sequence
Node Site
N1 Site 1